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May I know what convert tool you are referring to? Are you referring to this one http://www.convertcsv.com/csv-viewer-editor.htm? Unfortunately, that app is not related to us (JotForm). I believe that is a 3rd party app that is personally suggested by one of my colleagues.
You can actually download your form submissions as PDF, CSV or Excel file, you can check this guide: https://www.jotform.com/help/73-How-to-Download-Form-Submissions-as-Excel-CSV-PDF
You can also create reports, here's a guide to learn more about them: https://www.jotform.com/help/326-How-To-Create-Form-Reports-in-JotForm
Aside from those, we have other apps that you can use to manage or view your submission data. You can check our apps page for that: https://apps.jotform.com/
One of the most useful app that we have is the Google Spreadsheet integration. It allows you to have your form submissions on an online spreadsheet.
I hope that helps. If I misunderstood your concern, please do provide us more information.